Video - Tobacco dependence

Tobacco dependence, also known as nicotine dependence, is a chronic addiction to nicotine, a substance found in tobacco products such as cigarettes, cigars, and chewing tobacco. Nicotine stimulates the release of dopamine in the brain, which creates a pleasurable sensation and reinforces the behavior of smoking, leading to dependence.

Symptoms of tobacco dependence may include strong cravings for nicotine, difficulty quitting, withdrawal symptoms such as irritability, anxiety, and difficulty concentrating, and a continued use of tobacco despite negative consequences on health, social life, or finances.

Tobacco dependence is a serious health concern and increases the risk for heart attacks, strokes, chronic obstructive pulmonary disease (COPD), emphysema, and cancer (particularly lung cancer, cancers of the larynx and mouth, esophageal cancer and pancreatic cancer). Treatment for tobacco dependence includes nicotine replacement therapy, medications such as bupropion or varenicline, and counseling or support groups.